Gas and Oil Home Heating Furnaces - My furnace is acting funny
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09-15-01, 11:05 PM
My furnace is acting funny. I hear the thermostat kick in when i preset the temps, but the blower motor kicks on and off. Whats the problem???????????????
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09-16-01, 05:07 AM
Right off the bat or after it runs for a few minutes?If it acts up right away the motor may be going bad or the motor run capacitor is causing the problem.Have you tried placing the fan switch on tstat to on?Does fan run okay at this point?PDF
09-17-01, 11:04 AM
If I turn the fan to just fan, the motor runs without a problem. It only does its thing if it is on heat. I'll hear the unit heat up but the motor kicks on then off after only running for about two seconds. It will kick on and off till I shut the unit off completely. Even if i turn the tstat down below the current temp the motor will continue to kick on and off.
hvac4u
09-18-01, 01:26 PM
gas heat? if so possibly the limit switch. how old is the unit?
09-19-01, 04:58 AM
Yes, it is gas. And I beleive it's a 94 or 95 Miller unit.